#37619A
Closest named color: Denim Blue (#3B5B92). oklch(49% 0.103 256.5), rgb(55, 97, 154).
Aa
White text reads best on this color (6.28:1).
About this color
#37619A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.103 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.019 away. White text reads best on it, at 6.28:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.33:1 |
| White text | 6.28:1 |
Values
| HEX | #37619A |
| RGB | rgb(55, 97, 154) |
| HSL | hsl(215, 47%, 41%) |
| OKLCH | oklch(49% 0.103 256.5) |
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 #37619A | 6.28:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #37619A | 3.33:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #37619A text on white | 6.28:1 | AA | Lc 81.1 | Fine for body text |
| #37619A text on black | 3.33:1 | AA large text | Lc -20.7 | Dividers and decoration only |
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 700.
-
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
#ACC2E1
oklch(80.8% 0.05 257)
-
Step 400
400
#80A3D2
oklch(70.7% 0.079 255.9)
-
Step 500
500
#608BC7
oklch(63.1% 0.103 256.9)
-
Step 600
600
#4674B3
oklch(55.5% 0.111 256.6)
-
Step 700
700 (this color)
#37619A
oklch(49% 0.103 256.5)
-
Step 800
800
#2E507D
oklch(42.8% 0.085 256)
-
Step 900
900
#294265
oklch(37.6% 0.068 257)
-
Step 950
950
#19273B
oklch(27% 0.042 257.3)
#37619A 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) | #48659C | 0.024 |
| Deuteranopia (no green cones) | #3B5C99 | 0.014 |
| Tritanopia (no blue cones) | #006E76 | 0.085 |
| Achromatopsia (no color) | #606060 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37619A
#37619A
oklch(49% 0.103 256.5)
- #815700
#815700
oklch(49% 0.103 76.4)
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 #37619A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.019
- Dusky Blue #475F94 ΔE 0.019
- Denim #3B638C ΔE 0.025
- Peacock Blue #016795 ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.035
- French Blue #436BAD ΔE 0.042
- Mid Blue #276AB3 ΔE 0.043
- Muted Blue #3B719F ΔE 0.047
Use #37619A 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.