#537AEA
Closest named color: Cornflower (#6A79F7). oklch(60.9% 0.174 266.8), rgb(83, 122, 234).
Aa
Black text reads best on this color (5.33:1).
About this color
#537AEA is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.174 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.034 away. Black text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #537AEA |
| RGB | rgb(83, 122, 234) |
| HSL | hsl(225, 78%, 62%) |
| OKLCH | oklch(60.9% 0.174 266.8) |
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 #537AEA | 3.93:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #537AEA | 5.33:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #537AEA text on white | 3.93:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #537AEA text on black | 5.33:1 | AA | Lc -35.3 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9F9
oklch(88.5% 0.047 266.7)
-
Step 300
300
#A8C0F9
oklch(81% 0.085 266.8)
-
Step 400
400
#7A9DF6
oklch(70.8% 0.136 266.7)
-
Step 500
500 (this color)
#537AEA
oklch(60.9% 0.174 266.8)
-
Step 600
600
#4167E0
oklch(55.5% 0.189 266.9)
-
Step 700
700
#3355C3
oklch(49.1% 0.176 266.7)
-
Step 800
800
#2B469E
oklch(42.7% 0.147 267)
-
Step 900
900
#263C7D
oklch(37.7% 0.114 266.8)
-
Step 950
950
#162449
oklch(27% 0.071 266.2)
#537AEA 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) | #3F88EE | 0.037 |
| Deuteranopia (no green cones) | #1C7AE8 | 0.041 |
| Tritanopia (no blue cones) | #0094A7 | 0.145 |
| Achromatopsia (no color) | #808080 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537AEA
#537AEA
oklch(60.9% 0.174 266.8)
- #A37C00
#A37C00
oklch(60.8% 0.124 86.4)
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 #537AEA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.034
- Soft Blue #6488EA ΔE 0.043
- Clear Blue #247AFD ΔE 0.044
- Royal Blue #4169E1 ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.063
- Dodger Blue #1E90FF ΔE 0.063
- Medium Slate Blue #7B68EE ΔE 0.063
Use #537AEA 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.