#334D5C
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.6% 0.04 234.4), rgb(51, 77, 92).
Aa
White text reads best on this color (8.91:1).
About this color
#334D5C is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.040 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.026 away. White text reads best on it, at 8.91:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #334D5C |
| RGB | rgb(51, 77, 92) |
| HSL | hsl(202, 29%, 28%) |
| OKLCH | oklch(40.6% 0.04 234.4) |
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 #334D5C | 8.91:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #334D5C | 2.35:1 | Fails | Lc 13.6 | Not readable |
| #334D5C text on white | 8.91:1 | AAA | Lc 90.4 | Preferred for body text |
| #334D5C text on black | 2.35:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBEE
oklch(93.7% 0.007 233.6)
-
Step 200
200
#D1DBE1
oklch(88.6% 0.014 233.8)
-
Step 300
300
#B3C3CE
oklch(80.8% 0.023 237.7)
-
Step 400
400
#8AA5B5
oklch(70.7% 0.038 234.1)
-
Step 500
500
#6D8FA3
oklch(63.2% 0.049 234.4)
-
Step 600
600
#54798E
oklch(55.6% 0.053 233.9)
-
Step 700
700
#456679
oklch(49.3% 0.049 234.4)
-
Step 800
800 (this color)
#334D5C
oklch(40.6% 0.04 234.4)
-
Step 900
900
#314550
oklch(37.8% 0.031 232.7)
-
Step 950
950
#1D282F
oklch(27% 0.02 236.4)
#334D5C 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) | #464C5D | 0.027 |
| Deuteranopia (no green cones) | #40485C | 0.022 |
| Tritanopia (no blue cones) | #235152 | 0.030 |
| Achromatopsia (no color) | #4A4A4A | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334D5C
#334D5C
oklch(40.6% 0.04 234.4)
- #5B4334
#5B4334
oklch(40.5% 0.041 53.2)
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 #334D5C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.027
- Charcoal #264653 ΔE 0.031
- Deep Teal #00555A ΔE 0.042
- Dark Teal #014D4E ΔE 0.048
- Charcoal Grey #3C4142 ΔE 0.049
- Dark Blue Green #005249 ΔE 0.057
- Petrol #005F6A ΔE 0.058
Use #334D5C 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.