#2B507E
Closest named color: Light Navy (#155084). oklch(42.7% 0.088 254.9), rgb(43, 80, 126).
Aa
White text reads best on this color (8.23:1).
About this color
#2B507E is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.088 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.019 away. White text reads best on it, at 8.23:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.55:1 |
| White text | 8.23:1 |
Values
| HEX | #2B507E |
| RGB | rgb(43, 80, 126) |
| HSL | hsl(213, 49%, 33%) |
| OKLCH | oklch(42.7% 0.088 254.9) |
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 #2B507E | 8.23:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #2B507E | 2.55:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #2B507E text on white | 8.23:1 | AAA | Lc 88.3 | Fine for body text |
| #2B507E text on black | 2.55:1 | Fails | Lc -13.9 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CDDBEC
oklch(88.6% 0.028 253.2)
-
Step 300
300
#ABC3E2
oklch(80.9% 0.051 254.9)
-
Step 400
400
#7EA3D3
oklch(70.6% 0.082 255.2)
-
Step 500
500
#5C8CC8
oklch(63.1% 0.105 254.6)
-
Step 600
600
#4275B5
oklch(55.7% 0.114 255)
-
Step 700
700
#33629B
oklch(49.1% 0.105 254.5)
-
Step 800
800 (this color)
#2B507E
oklch(42.7% 0.088 254.9)
-
Step 900
900
#274365
oklch(37.8% 0.068 254.1)
-
Step 950
950
#17273B
oklch(26.9% 0.043 254.6)
#2B507E 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) | #3C5380 | 0.023 |
| Deuteranopia (no green cones) | #314B7D | 0.015 |
| Tritanopia (no blue cones) | #005B61 | 0.072 |
| Achromatopsia (no color) | #4F4F4F | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B507E
#2B507E
oklch(42.7% 0.088 254.9)
- #6B4704
#6B4704
oklch(42.8% 0.088 75.1)
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 #2B507E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.019
- Dusk Blue #26538D ΔE 0.025
- Deep Sea Blue #015482 ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.032
- Cobalt #1E488F ΔE 0.042
- YInMn Blue #415A77 ΔE 0.046
- Dusk #4E5481 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.048
Use #2B507E 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.