#024B79
Closest named color: Twilight Blue (#0A437A). oklch(39.9% 0.1 245.2), rgb(2, 75, 121).
Aa
White text reads best on this color (9.18:1).
About this color
#024B79 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.100 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.024 away. White text reads best on it, at 9.18:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.28:1 |
| White text | 9.18:1 |
Values
| HEX | #024B79 |
| RGB | rgb(2, 75, 121) |
| HSL | hsl(203, 97%, 24%) |
| OKLCH | oklch(39.9% 0.1 245.2) |
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 #024B79 | 9.18:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #024B79 | 2.28:1 | Fails | Lc 13.3 | Not readable |
| #024B79 text on white | 9.18:1 | AAA | Lc 90.6 | Preferred for body text |
| #024B79 text on black | 2.28:1 | Fails | Lc -11.7 | Not readable |
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 900.
-
Step 50
50
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C3DDF3
oklch(88.5% 0.041 243.7)
-
Step 300
300
#98C6EE
oklch(80.8% 0.075 245.2)
-
Step 400
400
#5BA8E6
oklch(70.8% 0.119 244.9)
-
Step 500
500
#1790DF
oklch(63.1% 0.153 245.2)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A2
oklch(49% 0.125 245.5)
-
Step 800
800
#005386
oklch(42.8% 0.108 245.3)
-
Step 900
900 (this color)
#024B79
oklch(39.9% 0.1 245.2)
-
Step 950
950
#042943
oklch(27.1% 0.063 244.6)
#024B79 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) | #354D7B | 0.040 |
| Deuteranopia (no green cones) | #234378 | 0.028 |
| Tritanopia (no blue cones) | #00565C | 0.068 |
| Achromatopsia (no color) | #484848 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #024B79
#024B79
oklch(39.9% 0.1 245.2)
- #683B00
#683B00
oklch(39.9% 0.09 64.3)
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 #024B79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.024
- Light Navy #155084 ΔE 0.025
- Deep Sea Blue #015482 ΔE 0.029
- Cobalt #1E488F ΔE 0.043
- Dusk Blue #26538D ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.053
- Marine Blue #01386A ΔE 0.061
- Light Navy Blue #2E5A88 ΔE 0.061
Use #024B79 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.