#1B4A62
Closest named color: Dark Grey Blue (#29465B). oklch(38.9% 0.065 234.3), rgb(27, 74, 98).
Aa
White text reads best on this color (9.53:1).
About this color
#1B4A62 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.065 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.018 away. White text reads best on it, at 9.53:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #1B4A62 |
| RGB | rgb(27, 74, 98) |
| HSL | hsl(200, 57%, 25%) |
| OKLCH | oklch(38.9% 0.065 234.3) |
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 #1B4A62 | 9.53:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #1B4A62 | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #1B4A62 text on white | 9.53:1 | AAA | Lc 91.8 | Preferred for body text |
| #1B4A62 text on black | 2.20:1 | Fails | Lc -10.5 | 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 900.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE9
oklch(88.6% 0.027 234)
-
Step 300
300
#A3C6DC
oklch(80.8% 0.049 235.8)
-
Step 400
400
#6FA9CA
oklch(70.7% 0.077 234.4)
-
Step 500
500
#4493BC
oklch(63.1% 0.099 234)
-
Step 600
600
#1C7DA9
oklch(55.7% 0.108 234.1)
-
Step 700
700
#096991
oklch(49.1% 0.101 234.3)
-
Step 800
800
#105675
oklch(42.8% 0.082 233.5)
-
Step 900
900 (this color)
#1B4A62
oklch(38.9% 0.065 234.3)
-
Step 950
950
#0F2A37
oklch(27.1% 0.041 231.9)
#1B4A62 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) | #3E4963 | 0.040 |
| Deuteranopia (no green cones) | #354262 | 0.035 |
| Tritanopia (no blue cones) | #005052 | 0.041 |
| Achromatopsia (no color) | #454545 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B4A62
#1B4A62
oklch(38.9% 0.065 234.3)
- #5F3B21
#5F3B21
oklch(38.9% 0.064 55.4)
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 #1B4A62, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.018
- Charcoal #264653 ΔE 0.026
- Dark Teal #014D4E ΔE 0.043
- Deep Teal #00555A ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.045
- Twilight Blue #0A437A ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.056
Use #1B4A62 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.