#374368
Closest named color: Dark Grey Blue (#29465B). oklch(39% 0.065 269.5), rgb(55, 67, 104).
Aa
White text reads best on this color (9.69:1).
About this color
#374368 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.065 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.033 away. White text reads best on it, at 9.69:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.16:1 |
| White text | 9.69:1 |
Values
| HEX | #374368 |
| RGB | rgb(55, 67, 104) |
| HSL | hsl(225, 31%, 31%) |
| OKLCH | oklch(39% 0.065 269.5) |
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 #374368 | 9.69:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #374368 | 2.16:1 | Fails | Lc 11.5 | Not readable |
| #374368 text on white | 9.69:1 | AAA | Lc 92.4 | Preferred for body text |
| #374368 text on black | 2.16:1 | Fails | Lc -10.0 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B4C0E1
oklch(80.9% 0.049 269.5)
-
Step 400
400
#8D9FD2
oklch(70.7% 0.078 269.3)
-
Step 500
500
#7186C6
oklch(63% 0.1 269.5)
-
Step 600
600
#5A6FB3
oklch(55.6% 0.109 269.6)
-
Step 700
700
#4A5D9A
oklch(49.2% 0.101 269.4)
-
Step 800
800
#3D4C7D
oklch(42.7% 0.084 269.7)
-
Step 900
900 (this color)
#374368
oklch(39% 0.065 269.5)
-
Step 950
950
#1E253B
oklch(26.9% 0.042 269.9)
#374368 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) | #36476A | 0.012 |
| Deuteranopia (no green cones) | #314267 | 0.009 |
| Tritanopia (no blue cones) | #254B50 | 0.060 |
| Achromatopsia (no color) | #444444 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374368
#374368
oklch(39% 0.065 269.5)
- #534316
#534316
oklch(39% 0.065 89.2)
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 #374368, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.033
- Charcoal #264653 ΔE 0.047
- Twilight Blue #0A437A ΔE 0.051
- Light Navy #155084 ΔE 0.059
- Dark Blue Grey #1F3B4D ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.064
- Charcoal Grey #3C4142 ΔE 0.065
- Deep Sea Blue #015482 ΔE 0.065
Use #374368 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.