#283D46
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.6% 0.031 226.6), rgb(40, 61, 70).
Aa
White text reads best on this color (11.37:1).
About this color
#283D46 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.031 and its hue 227°. 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 11.37:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.84:1 |
| White text | 11.37:1 |
Values
| HEX | #283D46 |
| RGB | rgb(40, 61, 70) |
| HSL | hsl(198, 27%, 22%) |
| OKLCH | oklch(34.6% 0.031 226.6) |
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 #283D46 | 11.37:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #283D46 | 1.84:1 | Fails | Lc 7.7 | Not readable |
| #283D46 text on white | 11.37:1 | AAA | Lc 96.2 | Preferred for body text |
| #283D46 text on black | 1.84:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D1DBE0
oklch(88.5% 0.013 228.9)
-
Step 300
300
#B2C4CC
oklch(80.9% 0.023 226.2)
-
Step 400
400
#89A6B3
oklch(70.8% 0.037 226.8)
-
Step 500
500
#6B90A0
oklch(63.2% 0.048 226.4)
-
Step 600
600
#527A8B
oklch(55.6% 0.052 226.5)
-
Step 700
700
#436776
oklch(49.3% 0.048 226.1)
-
Step 800
800
#375460
oklch(42.8% 0.04 225.8)
-
Step 900
900 (this color)
#283D46
oklch(34.6% 0.031 226.6)
-
Step 950
950
#1C292E
oklch(27.1% 0.02 223.6)
#283D46 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) | #383C46 | 0.023 |
| Deuteranopia (no green cones) | #343946 | 0.021 |
| Tritanopia (no blue cones) | #1D4040 | 0.021 |
| Achromatopsia (no color) | #3A3A3A | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #283D46
#283D46
oklch(34.6% 0.031 226.6)
- #47352C
#47352C
oklch(34.6% 0.03 47.8)
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 #283D46, 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
- Onyx #343A40 ΔE 0.019
- Charcoal #264653 ΔE 0.032
- Midnight Green #073B4C ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.035
- Gunmetal #293241 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.048
Use #283D46 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.