#254598
Closest named color: Cobalt (#1E488F). oklch(41.7% 0.141 264.9), rgb(37, 69, 152).
Aa
White text reads best on this color (8.81:1).
About this color
#254598 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.141 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.018 away. White text reads best on it, at 8.81:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.38:1 |
| White text | 8.81:1 |
Values
| HEX | #254598 |
| RGB | rgb(37, 69, 152) |
| HSL | hsl(223, 61%, 37%) |
| OKLCH | oklch(41.7% 0.141 264.9) |
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 #254598 | 8.81:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #254598 | 2.38:1 | Fails | Lc 14.3 | Not readable |
| #254598 text on white | 8.81:1 | AAA | Lc 89.7 | Fine for body text |
| #254598 text on black | 2.38:1 | Fails | Lc -12.5 | 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 800.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CAD9F8
oklch(88.4% 0.046 264.9)
-
Step 300
300
#A7C0F7
oklch(80.9% 0.083 265.6)
-
Step 400
400
#789EF3
oklch(70.8% 0.132 264.9)
-
Step 500
500
#5683EF
oklch(63.2% 0.169 264.9)
-
Step 600
600
#3D6ADD
oklch(55.7% 0.183 264.9)
-
Step 700
700
#2F57C0
oklch(49.1% 0.171 264.9)
-
Step 800
800 (this color)
#254598
oklch(41.7% 0.141 264.9)
-
Step 900
900
#243D7B
oklch(37.6% 0.11 265)
-
Step 950
950
#152448
oklch(26.9% 0.07 265)
#254598 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) | #04509B | 0.031 |
| Deuteranopia (no green cones) | #004596 | 0.023 |
| Tritanopia (no blue cones) | #005967 | 0.112 |
| Achromatopsia (no color) | #4A4A4A | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #254598
#254598
oklch(41.7% 0.141 264.9)
- #624800
#624800
oklch(41.8% 0.086 84.9)
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 #254598, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.018
- Blueberry #464196 ΔE 0.042
- Sapphire #2138AB ΔE 0.045
- Dusk Blue #26538D ΔE 0.046
- Light Navy #155084 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.051
- Twilight Blue #0A437A ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.062
Use #254598 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.