#515CE2
Closest named color: Warm Blue (#4B57DB). oklch(54.5% 0.201 274), rgb(81, 92, 226).
Aa
White text reads best on this color (5.27:1).
About this color
#515CE2 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.201 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.018 away. White text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.97:1 |
| White text | 5.27:1 |
Values
| HEX | #515CE2 |
| RGB | rgb(81, 92, 226) |
| HSL | hsl(235, 71%, 60%) |
| OKLCH | oklch(54.5% 0.201 274) |
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 #515CE2 | 5.27:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #515CE2 | 3.97:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #515CE2 text on white | 5.27:1 | AA | Lc 75.7 | Fine for body text |
| #515CE2 text on black | 3.97:1 | AA large text | Lc -26.0 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED7FB
oklch(88.4% 0.051 274.3)
-
Step 300
300
#AEBDFC
oklch(81% 0.091 273.9)
-
Step 400
400
#8598FA
oklch(70.7% 0.145 273.8)
-
Step 500
500
#6A7BF7
oklch(63.2% 0.184 274)
-
Step 600
600 (this color)
#515CE2
oklch(54.5% 0.201 274)
-
Step 700
700
#454EC8
oklch(49.1% 0.187 274)
-
Step 800
800
#3841A2
oklch(42.8% 0.155 273.8)
-
Step 900
900
#303880
oklch(37.7% 0.12 274.3)
-
Step 950
950
#1C224B
oklch(27.1% 0.076 274)
#515CE2 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) | #0072E6 | 0.065 |
| Deuteranopia (no green cones) | #0065DF | 0.055 |
| Tritanopia (no blue cones) | #007D96 | 0.167 |
| Achromatopsia (no color) | #6C6C6C | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515CE2
#515CE2
oklch(54.5% 0.201 274)
- #866E00
#866E00
oklch(54.5% 0.112 93.7)
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 #515CE2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.018
- Neon Blue #4361EE ΔE 0.025
- Royal Blue #4169E1 ΔE 0.033
- Dark Periwinkle #665FD1 ΔE 0.041
- Slate Blue #6A5ACD ΔE 0.048
- Azul #1D5DEC ΔE 0.049
- Light Indigo #6D5ACF ΔE 0.049
- Iris #6258C4 ΔE 0.052
Use #515CE2 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.