#2F3752
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.2% 0.049 271), rgb(47, 55, 82).
Aa
White text reads best on this color (11.73:1).
About this color
#2F3752 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.049 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.027 away. White text reads best on it, at 11.73:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.78:1 |
| White text | 11.73:1 |
Values
| HEX | #2F3752 |
| RGB | rgb(47, 55, 82) |
| HSL | hsl(226, 27%, 25%) |
| OKLCH | oklch(34.2% 0.049 271) |
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 #2F3752 | 11.73:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #2F3752 | 1.78:1 | Fails | Lc 0.0 | Not readable |
| #2F3752 text on white | 11.73:1 | AAA | Lc 96.9 | Preferred for body text |
| #2F3752 text on black | 1.78:1 | 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
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E7
oklch(88.6% 0.02 270.2)
-
Step 300
300
#B8C0D9
oklch(81% 0.036 271.5)
-
Step 400
400
#939FC6
oklch(70.7% 0.059 271.5)
-
Step 500
500
#7887B7
oklch(63% 0.075 270.8)
-
Step 600
600
#6271A3
oklch(55.7% 0.08 270.9)
-
Step 700
700
#515E8C
oklch(49.1% 0.076 271.3)
-
Step 800
800
#424D72
oklch(42.7% 0.063 270.9)
-
Step 900
900 (this color)
#2F3752
oklch(34.2% 0.049 271)
-
Step 950
950
#212636
oklch(27.1% 0.031 270.8)
#2F3752 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) | #2E3A53 | 0.009 |
| Deuteranopia (no green cones) | #2B3751 | 0.006 |
| Tritanopia (no blue cones) | #243C41 | 0.042 |
| Achromatopsia (no color) | #383838 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3752
#2F3752
oklch(34.2% 0.049 271)
- #423719
#423719
oklch(34.1% 0.048 89.6)
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 #2F3752, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.028
- Gunmetal #293241 ΔE 0.034
- Onyx #343A40 ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.039
- Midnight Green #073B4C ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.046
- Charcoal #264653 ΔE 0.049
Use #2F3752 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.