#2A536F
Closest named color: Deep Sea Blue (#015482). oklch(42.5% 0.066 240.5), rgb(42, 83, 111).
Aa
White text reads best on this color (8.18:1).
About this color
#2A536F is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.066 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.037 away. White text reads best on it, at 8.18:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.56:1 |
| White text | 8.18:1 |
Values
| HEX | #2A536F |
| RGB | rgb(42, 83, 111) |
| HSL | hsl(204, 45%, 30%) |
| OKLCH | oklch(42.5% 0.066 240.5) |
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 #2A536F | 8.18:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #2A536F | 2.56:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #2A536F text on white | 8.18:1 | AAA | Lc 88.2 | Fine for body text |
| #2A536F text on black | 2.56:1 | Fails | Lc -14.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ABC4D7
oklch(80.8% 0.038 240.8)
-
Step 400
400
#7EA6C4
oklch(70.7% 0.062 241.1)
-
Step 500
500
#5C90B5
oklch(63.2% 0.079 240.6)
-
Step 600
600
#417AA0
oklch(55.7% 0.084 239.8)
-
Step 700
700
#326689
oklch(49% 0.079 240.5)
-
Step 800
800 (this color)
#2A536F
oklch(42.5% 0.066 240.5)
-
Step 900
900
#27455A
oklch(37.7% 0.051 240.5)
-
Step 950
950
#172935
oklch(27.1% 0.033 238.8)
#2A536F 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) | #465370 | 0.034 |
| Deuteranopia (no green cones) | #3D4C6F | 0.029 |
| Tritanopia (no blue cones) | #005A5C | 0.051 |
| Achromatopsia (no color) | #4F4F4F | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A536F
#2A536F
oklch(42.5% 0.066 240.5)
- #694627
#694627
oklch(42.7% 0.066 61.1)
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 #2A536F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.037
- YInMn Blue #415A77 ΔE 0.038
- Light Navy #155084 ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.044
- Petrol #005F6A ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.047
- Deep Teal #00555A ΔE 0.048
- Dusk Blue #26538D ΔE 0.050
Use #2A536F 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.