#28364D
Closest named color: Dark Blue Grey (#1F3B4D). oklch(33.1% 0.045 260.1), rgb(40, 54, 77).
Aa
White text reads best on this color (12.17:1).
About this color
#28364D is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.045 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.019 away. White text reads best on it, at 12.17:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.72:1 |
| White text | 12.17:1 |
Values
| HEX | #28364D |
| RGB | rgb(40, 54, 77) |
| HSL | hsl(217, 32%, 23%) |
| OKLCH | oklch(33.1% 0.045 260.1) |
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 #28364D | 12.17:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #28364D | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #28364D text on white | 12.17:1 | AAA | Lc 97.8 | Preferred for body text |
| #28364D text on black | 1.72:1 | Fails | Lc 0.0 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2DAE6
oklch(88.6% 0.019 258.4)
-
Step 300
300
#B4C1D7
oklch(80.8% 0.034 261)
-
Step 400
400
#8DA2C3
oklch(70.8% 0.054 259.4)
-
Step 500
500
#718AB4
oklch(63% 0.07 260.6)
-
Step 600
600
#5974A0
oklch(55.6% 0.076 259.9)
-
Step 700
700
#496189
oklch(49.1% 0.071 260.3)
-
Step 800
800
#3C4F6F
oklch(42.6% 0.059 260.6)
-
Step 900
900 (this color)
#28364D
oklch(33.1% 0.045 260.1)
-
Step 950
950
#1E2735
oklch(27.1% 0.029 259.1)
#28364D 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) | #2E374E | 0.010 |
| Deuteranopia (no green cones) | #29344C | 0.006 |
| Tritanopia (no blue cones) | #1A3B3E | 0.040 |
| Achromatopsia (no color) | #363636 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28364D
#28364D
oklch(33.1% 0.045 260.1)
- #423319
#423319
oklch(33.1% 0.046 79.9)
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 #28364D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.019
- Gunmetal #293241 ΔE 0.022
- Prussian Blue #1D3557 ΔE 0.023
- Space Cadet #2B2D42 ΔE 0.031
- Midnight Green #073B4C ΔE 0.033
- Onyx #343A40 ΔE 0.035
- Charcoal #264653 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.052
Use #28364D 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.