#1B2F67
Closest named color: Marine (#042E60). oklch(32.4% 0.102 266.1), rgb(27, 47, 103).
Aa
White text reads best on this color (12.73:1).
About this color
#1B2F67 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.102 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.024 away. White text reads best on it, at 12.73:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.64:1 |
| White text | 12.73:1 |
Values
| HEX | #1B2F67 |
| RGB | rgb(27, 47, 103) |
| HSL | hsl(224, 58%, 25%) |
| OKLCH | oklch(32.4% 0.102 266.1) |
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 #1B2F67 | 12.73:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #1B2F67 | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #1B2F67 text on white | 12.73:1 | AAA | Lc 98.5 | Preferred for body text |
| #1B2F67 text on black | 1.64:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F6
oklch(88.5% 0.042 266.3)
-
Step 300
300
#AAC0F3
oklch(80.9% 0.076 266.5)
-
Step 400
400
#7D9EED
oklch(70.7% 0.122 266.1)
-
Step 500
500
#5D83E7
oklch(63% 0.156 266.3)
-
Step 600
600
#446BD5
oklch(55.7% 0.169 265.9)
-
Step 700
700
#3658B9
oklch(49.1% 0.158 266.1)
-
Step 800
800
#2D4996
oklch(42.8% 0.131 266)
-
Step 900
900 (this color)
#1B2F67
oklch(32.4% 0.102 266.1)
-
Step 950
950
#172546
oklch(27.1% 0.064 265.1)
#1B2F67 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) | #0C3669 | 0.022 |
| Deuteranopia (no green cones) | #002F66 | 0.022 |
| Tritanopia (no blue cones) | #003C46 | 0.082 |
| Achromatopsia (no color) | #323232 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B2F67
#1B2F67
oklch(32.4% 0.102 266.1)
- #433100
#433100
oklch(32.5% 0.066 86.2)
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 #1B2F67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.024
- Marine Blue #01386A ΔE 0.029
- Prussian Blue #1D3557 ΔE 0.036
- Midnight Blue #191970 ΔE 0.057
- Twilight Blue #0A437A ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.068
- Midnight Green #073B4C ΔE 0.069
Use #1B2F67 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.