#024FA5
Closest named color: Cobalt (#1E488F). oklch(44.1% 0.154 256.8), rgb(2, 79, 165).
Aa
White text reads best on this color (7.88:1).
About this color
#024FA5 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.154 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.039 away. White text reads best on it, at 7.88:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #024FA5 |
| RGB | rgb(2, 79, 165) |
| HSL | hsl(212, 98%, 33%) |
| OKLCH | oklch(44.1% 0.154 256.8) |
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 #024FA5 | 7.88:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #024FA5 | 2.66:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #024FA5 text on white | 7.88:1 | AAA | Lc 86.6 | Fine for body text |
| #024FA5 text on black | 2.66:1 | Fails | Lc -15.5 | 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 800.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9BC3FB
oklch(80.9% 0.091 256.9)
-
Step 400
400
#63A2F9
oklch(70.8% 0.144 256.8)
-
Step 500
500
#3387F5
oklch(63.1% 0.183 256.8)
-
Step 600
600
#006EE2
oklch(55.6% 0.196 256.8)
-
Step 700
700
#005CC0
oklch(49.1% 0.174 256.9)
-
Step 800
800 (this color)
#024FA5
oklch(44.1% 0.154 256.8)
-
Step 900
900
#0C407F
oklch(37.8% 0.119 256.4)
-
Step 950
950
#0A264B
oklch(27.1% 0.076 256.8)
#024FA5 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) | #1059A8 | 0.029 |
| Deuteranopia (no green cones) | #004BA3 | 0.011 |
| Tritanopia (no blue cones) | #006472 | 0.115 |
| Achromatopsia (no color) | #515151 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #024FA5
#024FA5
oklch(44.1% 0.154 256.8)
- #6F4B00
#6F4B00
oklch(44.2% 0.092 77.2)
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 #024FA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.039
- Dusk Blue #26538D ΔE 0.046
- Light Navy #155084 ΔE 0.055
- Sapphire #2138AB ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.062
- Blue Blue #2242C7 ΔE 0.064
- Denim Blue #3B5B92 ΔE 0.066
- Blueberry #464196 ΔE 0.066
Use #024FA5 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.