#142F4A
Closest named color: Prussian Blue (#1D3557). oklch(29.9% 0.059 250.5), rgb(20, 47, 74).
Aa
White text reads best on this color (13.67:1).
About this color
#142F4A is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.059 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.031 away. White text reads best on it, at 13.67:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.53:1 |
| White text | 13.67:1 |
Values
| HEX | #142F4A |
| RGB | rgb(20, 47, 74) |
| HSL | hsl(210, 57%, 18%) |
| OKLCH | oklch(29.9% 0.059 250.5) |
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 #142F4A | 13.67:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #142F4A | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #142F4A text on white | 13.67:1 | AAA | Lc 100.1 | Preferred for body text |
| #142F4A text on black | 1.53:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF3
oklch(88.6% 0.039 250.7)
-
Step 300
300
#9FC5ED
oklch(81% 0.07 250)
-
Step 400
400
#68A5E4
oklch(70.6% 0.113 250.4)
-
Step 500
500
#3B8DDC
oklch(63.1% 0.143 250.5)
-
Step 600
600
#0975CA
oklch(55.5% 0.157 250.6)
-
Step 700
700
#0062AC
oklch(49% 0.141 250.5)
-
Step 800
800
#03508E
oklch(42.6% 0.122 250.8)
-
Step 900
900
#114371
oklch(37.6% 0.094 250.6)
-
Step 950
950 (this color)
#142F4A
oklch(29.9% 0.059 250.5)
#142F4A 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) | #23304B | 0.020 |
| Deuteranopia (no green cones) | #1C2B49 | 0.015 |
| Tritanopia (no blue cones) | #003539 | 0.045 |
| Achromatopsia (no color) | #2D2D2D | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #142F4A
#142F4A
oklch(29.9% 0.059 250.5)
- #402705
#402705
oklch(29.8% 0.059 69.5)
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 #142F4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.033
- Gunmetal #293241 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.036
- Midnight Green #073B4C ΔE 0.040
- Marine #042E60 ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.043
- Dark #1B2431 ΔE 0.052
Use #142F4A 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.