#042841
Closest named color: Oxford Blue (#1B263B). oklch(26.7% 0.061 244.2), rgb(4, 40, 65).
Aa
White text reads best on this color (15.16:1).
About this color
#042841 is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.061 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.025 away. White text reads best on it, at 15.16:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.38:1 |
| White text | 15.16:1 |
Values
| HEX | #042841 |
| RGB | rgb(4, 40, 65) |
| HSL | hsl(205, 88%, 14%) |
| OKLCH | oklch(26.7% 0.061 244.2) |
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 #042841 | 15.16:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #042841 | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #042841 text on white | 15.16:1 | AAA | Lc 101.8 | Preferred for body text |
| #042841 text on black | 1.38:1 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C4DDF2
oklch(88.6% 0.039 243.5)
-
Step 300
300
#99C6ED
oklch(80.8% 0.073 245)
-
Step 400
400
#5CA8E3
oklch(70.7% 0.115 243.9)
-
Step 500
500
#1C90DC
oklch(63% 0.149 244.6)
-
Step 600
600
#0079BD
oklch(55.5% 0.138 244.2)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950 (this color)
#042841
oklch(26.7% 0.061 244.2)
#042841 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) | #1C2942 | 0.026 |
| Deuteranopia (no green cones) | #132341 | 0.020 |
| Tritanopia (no blue cones) | #002E31 | 0.042 |
| Achromatopsia (no color) | #262626 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #042841
#042841
oklch(26.7% 0.061 244.2)
- #391E00
#391E00
oklch(26.6% 0.06 64.4)
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 #042841, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.025
- Dark #1B2431 ΔE 0.036
- Jet #212529 ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.053
- Rich Black #0D1B2A ΔE 0.056
- Marine #042E60 ΔE 0.058
- Gunmetal #293241 ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.063
Use #042841 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.