#1B5C8A
Closest named color: Light Navy Blue (#2E5A88). oklch(45.8% 0.098 244.3), rgb(27, 92, 138).
Aa
White text reads best on this color (7.13:1).
About this color
#1B5C8A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.098 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.014 away. White text reads best on it, at 7.13:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.94:1 |
| White text | 7.13:1 |
Values
| HEX | #1B5C8A |
| RGB | rgb(27, 92, 138) |
| HSL | hsl(205, 67%, 32%) |
| OKLCH | oklch(45.8% 0.098 244.3) |
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 #1B5C8A | 7.13:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #1B5C8A | 2.94:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #1B5C8A text on white | 7.13:1 | AAA | Lc 84.4 | Fine for body text |
| #1B5C8A text on black | 2.94:1 | Fails | Lc -17.6 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C8DCED
oklch(88.5% 0.032 243.7)
-
Step 300
300
#A2C5E4
oklch(80.8% 0.058 245.3)
-
Step 400
400
#6DA7D6
oklch(70.7% 0.092 244.1)
-
Step 500
500
#4290CB
oklch(63.1% 0.117 244.2)
-
Step 600
600
#1A79B8
oklch(55.5% 0.128 244.3)
-
Step 700
700
#08669F
oklch(49.2% 0.119 244.3)
-
Step 800
800 (this color)
#1B5C8A
oklch(45.8% 0.098 244.3)
-
Step 900
900
#174567
oklch(37.7% 0.076 244.4)
-
Step 950
950
#0F293C
oklch(27.1% 0.048 243)
#1B5C8A 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) | #475D8C | 0.043 |
| Deuteranopia (no green cones) | #375389 | 0.033 |
| Tritanopia (no blue cones) | #00676C | 0.069 |
| Achromatopsia (no color) | #585858 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5C8A
#1B5C8A
oklch(45.8% 0.098 244.3)
- #7D4A0B
#7D4A0B
oklch(45.9% 0.099 64.2)
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 #1B5C8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.014
- Dusk Blue #26538D ΔE 0.028
- Deep Sea Blue #015482 ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.032
- Peacock Blue #016795 ΔE 0.033
- Light Navy #155084 ΔE 0.037
- Denim #3B638C ΔE 0.037
- YInMn Blue #415A77 ΔE 0.043
Use #1B5C8A 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.