#28445D
Closest named color: Dark Grey Blue (#29465B). oklch(37.6% 0.055 246.8), rgb(40, 68, 93).
Aa
White text reads best on this color (10.11:1).
About this color
#28445D is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.055 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.008 away. White text reads best on it, at 10.11:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #28445D |
| RGB | rgb(40, 68, 93) |
| HSL | hsl(208, 40%, 26%) |
| OKLCH | oklch(37.6% 0.055 246.8) |
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 #28445D | 10.11:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #28445D | 2.07:1 | Fails | Lc 10.5 | Not readable |
| #28445D text on white | 10.11:1 | AAA | Lc 93.4 | Preferred for body text |
| #28445D text on black | 2.07:1 | Fails | Lc -9.1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ACC4DA
oklch(80.9% 0.041 246)
-
Step 400
400
#7FA5C8
oklch(70.7% 0.066 246.7)
-
Step 500
500
#5E8EBA
oklch(63% 0.085 247.2)
-
Step 600
600
#4378A6
oklch(55.6% 0.092 246.6)
-
Step 700
700
#35658E
oklch(49.2% 0.084 246.4)
-
Step 800
800
#2C5273
oklch(42.6% 0.07 246.6)
-
Step 900
900 (this color)
#28445D
oklch(37.6% 0.055 246.8)
-
Step 950
950
#182837
oklch(27% 0.035 247.7)
#28445D 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) | #3A455E | 0.025 |
| Deuteranopia (no green cones) | #333F5D | 0.020 |
| Tritanopia (no blue cones) | #094A4D | 0.046 |
| Achromatopsia (no color) | #424242 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28445D
#28445D
oklch(37.6% 0.055 246.8)
- #553B20
#553B20
oklch(37.5% 0.055 65.8)
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 #28445D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.008
- Charcoal #264653 ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.051
- Midnight Green #073B4C ΔE 0.052
- Dark Teal #014D4E ΔE 0.052
Use #28445D 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.