#2B5978
Closest named color: YInMn Blue (#415A77). oklch(44.6% 0.072 240.5), rgb(43, 89, 120).
Aa
White text reads best on this color (7.49:1).
About this color
#2B5978 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.072 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.025 away. White text reads best on it, at 7.49:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.80:1 |
| White text | 7.49:1 |
Values
| HEX | #2B5978 |
| RGB | rgb(43, 89, 120) |
| HSL | hsl(204, 47%, 32%) |
| OKLCH | oklch(44.6% 0.072 240.5) |
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 #2B5978 | 7.49:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #2B5978 | 2.80:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #2B5978 text on white | 7.49:1 | AAA | Lc 85.9 | Fine for body text |
| #2B5978 text on black | 2.80:1 | Fails | Lc -16.2 | Dividers and decoration only |
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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#A9C5DA
oklch(80.9% 0.042 240.5)
-
Step 400
400
#7AA7C7
oklch(70.8% 0.067 239.9)
-
Step 500
500
#5790B8
oklch(63% 0.085 240.6)
-
Step 600
600
#3A7AA5
oklch(55.6% 0.094 240.7)
-
Step 700
700
#2C678D
oklch(49.2% 0.086 240.1)
-
Step 800
800 (this color)
#2B5978
oklch(44.6% 0.072 240.5)
-
Step 900
900
#24455C
oklch(37.6% 0.055 240.8)
-
Step 950
950
#162936
oklch(27.1% 0.035 239.7)
#2B5978 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) | #4B5979 | 0.038 |
| Deuteranopia (no green cones) | #405177 | 0.031 |
| Tritanopia (no blue cones) | #006164 | 0.053 |
| Achromatopsia (no color) | #555555 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5978
#2B5978
oklch(44.6% 0.072 240.5)
- #714A28
#714A28
oklch(44.5% 0.072 60.4)
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 #2B5978, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.035
- Petrol #005F6A ΔE 0.041
- Light Navy #155084 ΔE 0.043
- Dusk Blue #26538D ΔE 0.043
- Denim #3B638C ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.047
Use #2B5978 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.