#133443
Closest named color: Midnight Green (#073B4C). oklch(30.8% 0.047 230.6), rgb(19, 52, 67).
Aa
White text reads best on this color (13.12:1).
About this color
#133443 is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.047 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.025 away. White text reads best on it, at 13.12:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.59:1 |
| White text | 13.12:1 |
Values
| HEX | #133443 |
| RGB | rgb(19, 52, 67) |
| HSL | hsl(199, 56%, 17%) |
| OKLCH | oklch(30.8% 0.047 230.6) |
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 #133443 | 13.12:1 | AAA | Lc -102.5 | Preferred for body text |
| Black text on #133443 | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #133443 text on white | 13.12:1 | AAA | Lc 99.3 | Preferred for body text |
| #133443 text on black | 1.59:1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C6DDEA
oklch(88.4% 0.03 232.5)
-
Step 300
300
#9DC8DE
oklch(80.9% 0.055 230.5)
-
Step 400
400
#63ABCE
oklch(70.8% 0.089 230.9)
-
Step 500
500
#2B95C1
oklch(63.1% 0.113 230.8)
-
Step 600
600
#007EA8
oklch(55.6% 0.112 230.6)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900
#044861
oklch(37.7% 0.074 230.4)
-
Step 950
950 (this color)
#133443
oklch(30.8% 0.047 230.6)
#133443 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) | #2C3344 | 0.032 |
| Deuteranopia (no green cones) | #262E43 | 0.029 |
| Tritanopia (no blue cones) | #003839 | 0.029 |
| Achromatopsia (no color) | #303030 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #133443
#133443
oklch(30.8% 0.047 230.6)
- #432919
#432919
oklch(30.9% 0.047 51.8)
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 #133443, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.025
- Gunmetal #293241 ΔE 0.027
- Dark Blue Grey #1F3B4D ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.046
- Onyx #343A40 ΔE 0.051
- Dark #1B2431 ΔE 0.056
Use #133443 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.