#2D4182
Closest named color: Cobalt (#1E488F). oklch(39.6% 0.112 268.1), rgb(45, 65, 130).
Aa
White text reads best on this color (9.58:1).
About this color
#2D4182 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.112 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.029 away. White text reads best on it, at 9.58:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.19:1 |
| White text | 9.58:1 |
Values
| HEX | #2D4182 |
| RGB | rgb(45, 65, 130) |
| HSL | hsl(226, 49%, 34%) |
| OKLCH | oklch(39.6% 0.112 268.1) |
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 #2D4182 | 9.58:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #2D4182 | 2.19:1 | Fails | Lc 12.0 | Not readable |
| #2D4182 text on white | 9.58:1 | AAA | Lc 92.0 | Preferred for body text |
| #2D4182 text on black | 2.19:1 | Fails | Lc -10.4 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9F9
oklch(88.6% 0.046 267.9)
-
Step 300
300
#A9BFF8
oklch(80.8% 0.085 268.1)
-
Step 400
400
#7D9CF4
oklch(70.7% 0.134 268.2)
-
Step 500
500
#5D80F0
oklch(63% 0.172 268.1)
-
Step 600
600
#4667DF
oklch(55.7% 0.187 268.2)
-
Step 700
700
#3855C1
oklch(49.2% 0.172 268.1)
-
Step 800
800
#2E469C
oklch(42.7% 0.143 268)
-
Step 900
900 (this color)
#2D4182
oklch(39.6% 0.112 268.1)
-
Step 950
950
#182449
oklch(27.2% 0.071 268)
#2D4182 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) | #1F4984 | 0.024 |
| Deuteranopia (no green cones) | #0E4181 | 0.028 |
| Tritanopia (no blue cones) | #00505B | 0.095 |
| Achromatopsia (no color) | #454545 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4182
#2D4182
oklch(39.6% 0.112 268.1)
- #584300
#584300
oklch(39.4% 0.081 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 #2D4182, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.029
- Twilight Blue #0A437A ΔE 0.033
- Dark Slate Blue #483D8B ΔE 0.043
- Light Navy #155084 ΔE 0.044
- Blueberry #464196 ΔE 0.050
- Dusk Blue #26538D ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.058
- Marine Blue #01386A ΔE 0.064
Use #2D4182 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.