#4557E0
Closest named color: Warm Blue (#4B57DB). oklch(52.7% 0.207 271.5), rgb(69, 87, 224).
Aa
White text reads best on this color (5.68:1).
About this color
#4557E0 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.207 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.011 away. White text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.207) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.69:1 |
| White text | 5.68:1 |
Values
| HEX | #4557E0 |
| RGB | rgb(69, 87, 224) |
| HSL | hsl(233, 71%, 57%) |
| OKLCH | oklch(52.7% 0.207 271.5) |
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 #4557E0 | 5.68:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #4557E0 | 3.69:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #4557E0 text on white | 5.68:1 | AA | Lc 77.9 | Fine for body text |
| #4557E0 text on black | 3.69:1 | AA large text | Lc -23.9 | Dividers and decoration only |
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 600.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CCD8FC
oklch(88.5% 0.051 270.8)
-
Step 300
300
#ABBEFE
oklch(81% 0.093 271.4)
-
Step 400
400
#8099FD
oklch(70.8% 0.149 271.5)
-
Step 500
500
#627BFB
oklch(63% 0.192 271.5)
-
Step 600
600 (this color)
#4557E0
oklch(52.7% 0.207 271.5)
-
Step 700
700
#3E4ECC
oklch(49.1% 0.194 271.6)
-
Step 800
800
#3341A4
oklch(42.6% 0.159 271.7)
-
Step 900
900
#2B3982
oklch(37.7% 0.123 271.1)
-
Step 950
950
#19224C
oklch(27% 0.078 271.2)
#4557E0 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) | #006EE4 | 0.060 |
| Deuteranopia (no green cones) | #0060DD | 0.044 |
| Tritanopia (no blue cones) | #007A93 | 0.168 |
| Achromatopsia (no color) | #676767 | 0.208 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4557E0
#4557E0
oklch(52.7% 0.207 271.5)
- #826800
#826800
oklch(52.8% 0.108 91.5)
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 #4557E0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.011
- Neon Blue #4361EE ΔE 0.031
- Azul #1D5DEC ΔE 0.037
- Royal Blue #4169E1 ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.056
- Iris #6258C4 ΔE 0.059
- Bright Blue #0165FC ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.061
Use #4557E0 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.