#254573
Closest named color: Twilight Blue (#0A437A). oklch(39% 0.087 257.6), rgb(37, 69, 115).
Aa
White text reads best on this color (9.64:1).
About this color
#254573 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.087 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.025 away. White text reads best on it, at 9.64:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.17:1 |
| White text | 9.64:1 |
Values
| HEX | #254573 |
| RGB | rgb(37, 69, 115) |
| HSL | hsl(215, 51%, 30%) |
| OKLCH | oklch(39% 0.087 257.6) |
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 #254573 | 9.64:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #254573 | 2.17:1 | Fails | Lc 11.8 | Not readable |
| #254573 text on white | 9.64:1 | AAA | Lc 92.1 | Preferred for body text |
| #254573 text on black | 2.17:1 | Fails | Lc -10.3 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADAF2
oklch(88.4% 0.037 258.4)
-
Step 300
300
#A6C3EB
oklch(80.9% 0.065 256.5)
-
Step 400
400
#77A2E1
oklch(70.6% 0.104 257.8)
-
Step 500
500
#538AD9
oklch(63.2% 0.133 257.5)
-
Step 600
600
#3672C7
oklch(55.6% 0.146 257.6)
-
Step 700
700
#295FAC
oklch(49.1% 0.136 257.8)
-
Step 800
800
#234E8B
oklch(42.7% 0.112 257.6)
-
Step 900
900 (this color)
#254573
oklch(39% 0.087 257.6)
-
Step 950
950
#142741
oklch(27.1% 0.055 256.6)
#254573 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) | #314975 | 0.020 |
| Deuteranopia (no green cones) | #254172 | 0.012 |
| Tritanopia (no blue cones) | #005056 | 0.072 |
| Achromatopsia (no color) | #454545 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #254573
#254573
oklch(39% 0.087 257.6)
- #5D3E00
#5D3E00
oklch(39% 0.082 77)
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 #254573, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.025
- Light Navy #155084 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.043
- Cobalt #1E488F ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.047
- Marine Blue #01386A ΔE 0.053
- Dusk Blue #26538D ΔE 0.055
- Charcoal #264653 ΔE 0.057
Use #254573 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.