#1B293D
Closest named color: Oxford Blue (#1B263B). oklch(27.8% 0.042 257.3), rgb(27, 41, 61).
Aa
White text reads best on this color (14.67:1).
About this color
#1B293D is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.042 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.010 away. White text reads best on it, at 14.67:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.43:1 |
| White text | 14.67:1 |
Values
| HEX | #1B293D |
| RGB | rgb(27, 41, 61) |
| HSL | hsl(215, 39%, 17%) |
| OKLCH | oklch(27.8% 0.042 257.3) |
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 #1B293D | 14.67:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #1B293D | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #1B293D text on white | 14.67:1 | AAA | Lc 101.4 | Preferred for body text |
| #1B293D text on black | 1.43:1 | 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 950.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CEDAEC
oklch(88.5% 0.028 258.4)
-
Step 300
300
#ADC2E1
oklch(80.8% 0.05 258)
-
Step 400
400
#81A3D2
oklch(70.8% 0.079 256.6)
-
Step 500
500
#618BC6
oklch(63.1% 0.101 257)
-
Step 600
600
#4874B3
oklch(55.6% 0.11 257.4)
-
Step 700
700
#39619A
oklch(49.1% 0.103 257.4)
-
Step 800
800
#2F4F7D
oklch(42.6% 0.086 257.5)
-
Step 900
900
#2A4264
oklch(37.6% 0.066 257.2)
-
Step 950
950 (this color)
#1B293D
oklch(27.8% 0.042 257.3)
#1B293D 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) | #212A3E | 0.010 |
| Deuteranopia (no green cones) | #1D273D | 0.007 |
| Tritanopia (no blue cones) | #0C2D30 | 0.036 |
| Achromatopsia (no color) | #282828 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B293D
#1B293D
oklch(27.8% 0.042 257.3)
- #34260F
#34260F
oklch(27.9% 0.042 78.1)
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 #1B293D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.010
- Dark #1B2431 ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.031
- Jet #212529 ΔE 0.036
- Gunmetal #293241 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.056
- Midnight Green #073B4C ΔE 0.060
- Rich Black #0D1B2A ΔE 0.061
Use #1B293D 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.