#2F448A
Closest named color: Cobalt (#1E488F). oklch(40.9% 0.119 268.2), rgb(47, 68, 138).
Aa
White text reads best on this color (9.07:1).
About this color
#2F448A is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.119 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.019 away. White text reads best on it, at 9.07:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #2F448A |
| RGB | rgb(47, 68, 138) |
| HSL | hsl(226, 49%, 36%) |
| OKLCH | oklch(40.9% 0.119 268.2) |
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 #2F448A | 9.07:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #2F448A | 2.31:1 | Fails | Lc 13.4 | Not readable |
| #2F448A text on white | 9.07:1 | AAA | Lc 90.6 | Preferred for body text |
| #2F448A text on black | 2.31:1 | Fails | Lc -11.7 | 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 800.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F4
oklch(88.5% 0.039 267.9)
-
Step 300
300
#ADC0EF
oklch(81% 0.07 267.6)
-
Step 400
400
#839EE6
oklch(70.8% 0.11 267.8)
-
Step 500
500
#6584DF
oklch(63.2% 0.142 268)
-
Step 600
600
#4D6BCD
oklch(55.6% 0.155 268.2)
-
Step 700
700
#3E59B1
oklch(49.1% 0.143 268)
-
Step 800
800 (this color)
#2F448A
oklch(40.9% 0.119 268.2)
-
Step 900
900
#2D3E73
oklch(37.8% 0.093 268.3)
-
Step 950
950
#1A2543
oklch(27.1% 0.058 267.3)
#2F448A 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) | #1E4D8D | 0.027 |
| Deuteranopia (no green cones) | #074589 | 0.031 |
| Tritanopia (no blue cones) | #005460 | 0.100 |
| Achromatopsia (no color) | #494949 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F448A
#2F448A
oklch(40.9% 0.119 268.2)
- #5D4700
#5D4700
oklch(41% 0.084 88.3)
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 #2F448A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.019
- Dark Slate Blue #483D8B ΔE 0.039
- Blueberry #464196 ΔE 0.039
- Light Navy #155084 ΔE 0.041
- Dusk Blue #26538D ΔE 0.042
- Twilight Blue #0A437A ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.055
- Twilight #4E518B ΔE 0.060
Use #2F448A 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.