#28417A
Closest named color: Twilight Blue (#0A437A). oklch(38.7% 0.102 264.4), rgb(40, 65, 122).
Aa
White text reads best on this color (9.87:1).
About this color
#28417A is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.102 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.023 away. White text reads best on it, at 9.87:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.12:1 |
| White text | 9.87:1 |
Values
| HEX | #28417A |
| RGB | rgb(40, 65, 122) |
| HSL | hsl(222, 51%, 32%) |
| OKLCH | oklch(38.7% 0.102 264.4) |
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 #28417A | 9.87:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #28417A | 2.12:1 | Fails | Lc 11.3 | Not readable |
| #28417A text on white | 9.87:1 | AAA | Lc 92.7 | Preferred for body text |
| #28417A text on black | 2.12:1 | Fails | Lc -9.8 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBD9F6
oklch(88.4% 0.043 265)
-
Step 300
300
#A8C1F3
oklch(81% 0.076 264)
-
Step 400
400
#7A9FED
oklch(70.8% 0.122 264.2)
-
Step 500
500
#5985E7
oklch(63.2% 0.155 264.2)
-
Step 600
600
#3F6CD5
oklch(55.6% 0.169 264.2)
-
Step 700
700
#3259B9
oklch(49.1% 0.158 264.6)
-
Step 800
800
#294A95
oklch(42.8% 0.129 263.9)
-
Step 900
900 (this color)
#28417A
oklch(38.7% 0.102 264.4)
-
Step 950
950
#162546
oklch(27.1% 0.065 264.1)
#28417A 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) | #26477C | 0.017 |
| Deuteranopia (no green cones) | #184079 | 0.017 |
| Tritanopia (no blue cones) | #004E57 | 0.085 |
| Achromatopsia (no color) | #434343 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28417A
#28417A
oklch(38.7% 0.102 264.4)
- #584000
#584000
oklch(38.7% 0.079 84.4)
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 #28417A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.023
- Cobalt #1E488F ΔE 0.038
- Light Navy #155084 ΔE 0.044
- Marine Blue #01386A ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.056
- Dusk Blue #26538D ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.059
Use #28417A 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.