#374C68
Closest named color: Dark Grey Blue (#29465B). oklch(41.2% 0.054 255.8), rgb(55, 76, 104).
Aa
White text reads best on this color (8.76:1).
About this color
#374C68 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.054 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.034 away. White text reads best on it, at 8.76:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.39:1 |
| White text | 8.76:1 |
Values
| HEX | #374C68 |
| RGB | rgb(55, 76, 104) |
| HSL | hsl(214, 31%, 31%) |
| OKLCH | oklch(41.2% 0.054 255.8) |
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 #374C68 | 8.76:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #374C68 | 2.39:1 | Fails | Lc 14.0 | Not readable |
| #374C68 text on white | 8.76:1 | AAA | Lc 90.0 | Fine for body text |
| #374C68 text on black | 2.39:1 | Fails | Lc -12.3 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B4C2D5
oklch(80.9% 0.031 256)
-
Step 400
400
#8CA2C0
oklch(70.6% 0.051 256.2)
-
Step 500
500
#708BB1
oklch(63% 0.065 257)
-
Step 600
600
#58759C
oklch(55.6% 0.07 256)
-
Step 700
700
#486286
oklch(49.1% 0.066 256.6)
-
Step 800
800 (this color)
#374C68
oklch(41.2% 0.054 255.8)
-
Step 900
900
#334358
oklch(37.8% 0.042 255.4)
-
Step 950
950
#1E2733
oklch(27% 0.026 255.7)
#374C68 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) | #414D69 | 0.015 |
| Deuteranopia (no green cones) | #3C4967 | 0.010 |
| Tritanopia (no blue cones) | #245256 | 0.047 |
| Achromatopsia (no color) | #4B4B4B | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374C68
#374C68
oklch(41.2% 0.054 255.8)
- #5C4728
#5C4728
oklch(41.3% 0.054 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 #374C68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.034
- Charcoal #264653 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.049
- Light Navy #155084 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.054
- Dusk #4E5481 ΔE 0.058
- Deep Teal #00555A ΔE 0.058
Use #374C68 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.