#2F4863
Closest named color: Dark Grey Blue (#29465B). oklch(39.4% 0.055 251.2), rgb(47, 72, 99).
Aa
White text reads best on this color (9.42:1).
About this color
#2F4863 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.055 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.017 away. White text reads best on it, at 9.42:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.22:1 |
| White text | 9.42:1 |
Values
| HEX | #2F4863 |
| RGB | rgb(47, 72, 99) |
| HSL | hsl(211, 36%, 29%) |
| OKLCH | oklch(39.4% 0.055 251.2) |
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 #2F4863 | 9.42:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #2F4863 | 2.22:1 | Fails | Lc 12.2 | Not readable |
| #2F4863 text on white | 9.42:1 | AAA | Lc 91.7 | Preferred for body text |
| #2F4863 text on black | 2.22:1 | Fails | Lc -10.7 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ADC3DB
oklch(80.8% 0.042 250.6)
-
Step 400
400
#82A4C9
oklch(70.7% 0.066 250.9)
-
Step 500
500
#628DBC
oklch(63.1% 0.086 251.4)
-
Step 600
600
#4876A8
oklch(55.5% 0.093 251.7)
-
Step 700
700
#396390
oklch(49% 0.087 251.5)
-
Step 800
800
#305175
oklch(42.7% 0.072 251.8)
-
Step 900
900 (this color)
#2F4863
oklch(39.4% 0.055 251.2)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#2F4863 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) | #3D4964 | 0.020 |
| Deuteranopia (no green cones) | #374462 | 0.015 |
| Tritanopia (no blue cones) | #174E51 | 0.048 |
| Achromatopsia (no color) | #464646 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4863
#2F4863
oklch(39.4% 0.055 251.2)
- #594123
#594123
oklch(39.4% 0.056 71.2)
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 #2F4863, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.017
- Charcoal #264653 ΔE 0.031
- Dark Slate Gray #2F4F4F ΔE 0.047
- Twilight Blue #0A437A ΔE 0.055
- Charcoal Grey #3C4142 ΔE 0.055
- Deep Teal #00555A ΔE 0.056
- Light Navy #155084 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.057
Use #2F4863 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.