#2A516F
Closest named color: Deep Sea Blue (#015482). oklch(42% 0.067 243.6), rgb(42, 81, 111).
Aa
White text reads best on this color (8.38:1).
About this color
#2A516F is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.067 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.036 away. White text reads best on it, at 8.38:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.50:1 |
| White text | 8.38:1 |
Values
| HEX | #2A516F |
| RGB | rgb(42, 81, 111) |
| HSL | hsl(206, 45%, 30%) |
| OKLCH | oklch(42% 0.067 243.6) |
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 #2A516F | 8.38:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #2A516F | 2.50:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #2A516F text on white | 8.38:1 | AAA | Lc 88.8 | Fine for body text |
| #2A516F text on black | 2.50:1 | Fails | Lc -13.4 | 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 800.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#ACC4D9
oklch(80.9% 0.04 244.7)
-
Step 400
400
#7FA6C5
oklch(70.8% 0.062 242.7)
-
Step 500
500
#5E8FB7
oklch(63.1% 0.08 244.2)
-
Step 600
600
#4379A3
oklch(55.7% 0.087 243.8)
-
Step 700
700
#34658B
oklch(49% 0.081 244)
-
Step 800
800 (this color)
#2A516F
oklch(42% 0.067 243.6)
-
Step 900
900
#28455B
oklch(37.8% 0.052 242.6)
-
Step 950
950
#182835
oklch(26.9% 0.033 243.9)
#2A516F 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) | #445170 | 0.032 |
| Deuteranopia (no green cones) | #3B4A6E | 0.027 |
| Tritanopia (no blue cones) | #00585B | 0.053 |
| Achromatopsia (no color) | #4E4E4E | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A516F
#2A516F
oklch(42% 0.067 243.6)
- #674523
#674523
oklch(42.1% 0.068 64.1)
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 #2A516F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.036
- Light Navy #155084 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.046
- Dusk Blue #26538D ΔE 0.049
- Deep Teal #00555A ΔE 0.050
- Petrol #005F6A ΔE 0.050
Use #2A516F 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.