#28456A
Closest named color: Dark Grey Blue (#29465B). oklch(38.6% 0.073 255.2), rgb(40, 69, 106).
Aa
White text reads best on this color (9.76:1).
About this color
#28456A is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.073 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.027 away. White text reads best on it, at 9.76:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.14:1 |
| White text | 9.76:1 |
Values
| HEX | #28456A |
| RGB | rgb(40, 69, 106) |
| HSL | hsl(214, 45%, 29%) |
| OKLCH | oklch(38.6% 0.073 255.2) |
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 #28456A | 9.76:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #28456A | 2.14:1 | Fails | Lc 11.4 | Not readable |
| #28456A text on white | 9.76:1 | AAA | Lc 92.5 | Preferred for body text |
| #28456A text on black | 2.14:1 | Fails | Lc -9.9 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBED
oklch(88.6% 0.03 253)
-
Step 300
300
#AAC3E4
oklch(81% 0.054 255.4)
-
Step 400
400
#7CA3D6
oklch(70.7% 0.087 255.4)
-
Step 500
500
#5A8CCC
oklch(63.2% 0.111 255.2)
-
Step 600
600
#3E74B8
oklch(55.4% 0.121 255.2)
-
Step 700
700
#30619F
oklch(49% 0.113 255.4)
-
Step 800
800
#295081
oklch(42.8% 0.093 255.2)
-
Step 900
900 (this color)
#28456A
oklch(38.6% 0.073 255.2)
-
Step 950
950
#16273D
oklch(27% 0.047 255.4)
#28456A 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) | #36476C | 0.020 |
| Deuteranopia (no green cones) | #2D4169 | 0.013 |
| Tritanopia (no blue cones) | #004D52 | 0.062 |
| Achromatopsia (no color) | #444444 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28456A
#28456A
oklch(38.6% 0.073 255.2)
- #5A3E0E
#5A3E0E
oklch(38.6% 0.073 76.1)
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 #28456A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.027
- Twilight Blue #0A437A ΔE 0.037
- Charcoal #264653 ΔE 0.042
- Light Navy #155084 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.055
- Marine Blue #01386A ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.059
Use #28456A 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.