#1A313F
Closest named color: Gunmetal (#293241). oklch(30.1% 0.039 236.7), rgb(26, 49, 63).
Aa
White text reads best on this color (13.50:1).
About this color
#1A313F is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.039 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.022 away. White text reads best on it, at 13.50:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.55:1 |
| White text | 13.50:1 |
Values
| HEX | #1A313F |
| RGB | rgb(26, 49, 63) |
| HSL | hsl(203, 42%, 17%) |
| OKLCH | oklch(30.1% 0.039 236.7) |
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 #1A313F | 13.50:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #1A313F | 1.55:1 | Fails | Lc 0.0 | Not readable |
| #1A313F text on white | 13.50:1 | AAA | Lc 99.9 | Preferred for body text |
| #1A313F text on black | 1.55:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A6C6DB
oklch(81% 0.045 236.9)
-
Step 400
400
#74A8C9
oklch(70.7% 0.073 237)
-
Step 500
500
#4C92BB
oklch(63.1% 0.094 236.6)
-
Step 600
600
#2B7BA7
oklch(55.5% 0.102 237.1)
-
Step 700
700
#1D688F
oklch(49.1% 0.094 236.6)
-
Step 800
800
#1B5574
oklch(42.7% 0.078 236.4)
-
Step 900
900
#1D465E
oklch(37.6% 0.061 237.2)
-
Step 950
950 (this color)
#1A313F
oklch(30.1% 0.039 236.7)
#1A313F 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) | #2B3140 | 0.024 |
| Deuteranopia (no green cones) | #252D3F | 0.019 |
| Tritanopia (no blue cones) | #063536 | 0.030 |
| Achromatopsia (no color) | #2E2E2E | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A313F
#1A313F
oklch(30.1% 0.039 236.7)
- #3D291A
#3D291A
oklch(30.1% 0.039 57.5)
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 #1A313F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.022
- Space Cadet #2B2D42 ΔE 0.028
- Midnight Green #073B4C ΔE 0.036
- Oxford Blue #1B263B ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.044
- Dark #1B2431 ΔE 0.046
- Jet #212529 ΔE 0.049
Use #1A313F 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.