#02639D
Closest named color: Peacock Blue (#016795). oklch(48.3% 0.12 244.9), rgb(2, 99, 157).
Aa
White text reads best on this color (6.41:1).
About this color
#02639D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.120 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.020 away. White text reads best on it, at 6.41:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #02639D |
| RGB | rgb(2, 99, 157) |
| HSL | hsl(202, 97%, 31%) |
| OKLCH | oklch(48.3% 0.12 244.9) |
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 #02639D | 6.41:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #02639D | 3.27:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #02639D text on white | 6.41:1 | AA | Lc 81.3 | Fine for body text |
| #02639D text on black | 3.27:1 | AA large text | Lc -20.6 | 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 700.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A2C5E4
oklch(80.8% 0.058 245.3)
-
Step 400
400
#6DA7D7
oklch(70.7% 0.093 244.6)
-
Step 500
500
#4290CC
oklch(63.1% 0.119 244.6)
-
Step 600
600
#1A79B9
oklch(55.6% 0.129 244.7)
-
Step 700
700 (this color)
#02639D
oklch(48.3% 0.12 244.9)
-
Step 800
800
#0F5381
oklch(42.7% 0.099 244.7)
-
Step 900
900
#174568
oklch(37.7% 0.078 245.2)
-
Step 950
950
#0F293D
oklch(27.1% 0.049 244.3)
#02639D 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) | #47669F | 0.049 |
| Deuteranopia (no green cones) | #31599C | 0.034 |
| Tritanopia (no blue cones) | #007178 | 0.083 |
| Achromatopsia (no color) | #5F5F5F | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02639D
#02639D
oklch(48.3% 0.12 244.9)
- #874F00
#874F00
oklch(48.2% 0.108 65)
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 #02639D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.020
- Denim Blue #3B5B92 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.041
- Denim #3B638C ΔE 0.042
- Ocean Blue #03719C ΔE 0.043
- Mid Blue #276AB3 ΔE 0.044
- Dusky Blue #475F94 ΔE 0.048
- Dusk Blue #26538D ΔE 0.048
Use #02639D 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.