#577DF2
Closest named color: Cornflower (#6A79F7). oklch(62.2% 0.18 267.4), rgb(87, 125, 242).
Aa
Black text reads best on this color (5.62:1).
About this color
#577DF2 is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.180 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.025 away. Black text reads best on it, at 5.62:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.62:1 |
| White text | 3.73:1 |
Values
| HEX | #577DF2 |
| RGB | rgb(87, 125, 242) |
| HSL | hsl(225, 86%, 65%) |
| OKLCH | oklch(62.2% 0.18 267.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #577DF2 | 3.73:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #577DF2 | 5.62:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #577DF2 text on white | 3.73:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #577DF2 text on black | 5.62:1 | AA | Lc -37.1 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CBD9FB
oklch(88.6% 0.049 267.7)
-
Step 300
300
#A7BFFB
oklch(80.8% 0.089 267.5)
-
Step 400
400
#7A9CF8
oklch(70.7% 0.14 267.4)
-
Step 500
500 (this color)
#577DF2
oklch(62.2% 0.18 267.4)
-
Step 600
600
#4166E4
oklch(55.6% 0.196 267.3)
-
Step 700
700
#3454C6
oklch(49.2% 0.181 267.3)
-
Step 800
800
#2B45A0
oklch(42.7% 0.151 267.5)
-
Step 900
900
#263B7F
oklch(37.6% 0.118 267.5)
-
Step 950
950
#16234A
oklch(26.9% 0.074 267.4)
#577DF2 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #3E8CF6 | 0.040 |
| Deuteranopia (no green cones) | #187DF0 | 0.045 |
| Tritanopia (no blue cones) | #0098AC | 0.150 |
| Achromatopsia (no color) | #848484 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577DF2
#577DF2
oklch(62.2% 0.18 267.4)
- #A78100
#A78100
oklch(62.2% 0.127 87.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #577DF2, closest first.
No curated palette has a color within ΔE 0.04 of #577DF2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.025
- Soft Blue #6488EA ΔE 0.037
- Clear Blue #247AFD ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.053
- Dodger Blue #1E90FF ΔE 0.056
- Chefchaouen Blue #4895EF ΔE 0.063
- Royal Blue #4169E1 ΔE 0.063
- Medium Slate Blue #7B68EE ΔE 0.063
Use #577DF2 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.